泡沫铝-聚氨酯的制备及其吸能特性分析.PDFVIP

第39 卷 第23 期 包 装 工 程 2018 年 12 月 PACKAGING ENGINEERING ·81 · - （中北大学，太原 030051 ） 目的 制备泡沫铝-聚氨酯复合材料，并研究球形开孔泡沫铝的孔隙率、聚氨酯（PU ）的含量对泡 沫铝-聚氨酯复合材料压缩性能和吸能性能的影响。分析泡沫铝孔隙率、聚氨酯含量对泡沫铝-聚氨酯复 合材料吸能效率和理想吸能效率的影响规律。方法 通过对复合材料试样进行准静态压缩试验，得出对 应的应力-应变曲线，进一步推导出吸能-应变曲线、吸能效率-应力曲线和理想吸能效率-应力曲线。结 果 当泡沫铝的孔隙率一定时，随着PU 含量的上升，泡沫铝-聚氨酯复合材料的压缩性能和吸能性能得 到提升。当PU 含量一定时，随着泡沫铝孔隙率的减小，泡沫铝-聚氨酯复合材料的压缩性能和吸能性能 会增加。结论 明确了吸能效率曲线和理想吸能效率曲线的应用范围，为缓冲材料的选择提供了依据。 泡沫铝-聚氨酯；准静态压缩；孔隙率；聚氨酯含量；吸能特性 TB485.1 A 1001-3563(2018)23-0081-07 DOI 10.19554/j.cnki.1001-3563.2018.23.014 Preparation of Aluminum Foam-polyurethane and Analysis of Its Energy Absorption Characteristics QI Ming-si, QIANG Zhi-peng, ZHANG Wei, HE Gao-feng , XUE Yang-yang , ZHANG Ji-ping (North University of China, Taiyuan 030051, China) ABSTRACT: The work aims to prepare aluminum foam-polyurethane composites and study the effect of porosity and polyurethane (PU) content of spherical open-cell aluminum foam on the compression and energy absorption properties of aluminum foam-polyurethane composites, and analyze the law of effects of porosity and polyurethane content of aluminum foam on the energy absorption efficiency and ideal energy absorption efficiency of aluminum foam-polyurethane compo- sites. The specimens of composites were subject to a quasi-static compression test to obtain the corresponding stress-strain curves, and the energy absorption-strain curve, energy absorption efficiency-stress curve and ideal energy absorption efficiency-stress curve were further derived. When the porosity of the aluminum foam was constant, the com- pre